Take a look at these faces, the odds are you’ll recognize one. They are the city’s entire population of Level 3 sex offenders; violent, predatory and more likely than most to commit another heinous act of depravity.

From DeVeaux in the city’s northwest to LaSalle in the southeast and everywhere in between, they live throughout Niagara Falls, near schools, playgrounds, parks and just about anyplace else potential victims are likely to congregate.

Beware. Behind the smiling face of the neighbor next door may beat the heart of a monster.